Printer&#39;s register hook



June 17, 1930. w, s, w oc V 1,764,062

PRINTERS REGISTER HOOK.

Filed June 14, 1929 12 aw a: WaI'nOG/E Patented June 17, 1930 PATENT oFFicE WALLACE S. WARNOCK, OF CHICAGO, ILLINOIS I'RINTERS REGISTER HOOK Application filed June 14,

My invention relates to printers register books that are insertible within grooves formed in beds or foundations and are provided with gearing that coacts with gearing in the grooves whereby bodily travel of the register hooks may be effected. The invention has for its object the provision of improved means whereby the gearing may be locked to prevent the register hooks from advancing or receding. In accordance with my invention a detent is provided which presses upon an operating gear that is carried by the body of the register hook. This gear that is thus engaged by the detent is preferably one which is accessible for operation through the hook and which is operable by a suitable tool that is adapted for turning engagement with this gear. The detent is preferably of U form being anchored, at one end, upon the body of the register hook and projecting, at its other end, through a slot in the body of the register hook to have engagement with the operating gear that is actuated by a tool passed through the register hook The walls of the slot guard the gear engaging end of the detent and serve to hold the detent from material rotary movement when the detent is provided with a single anchorage which is preferably a shaft or bolt upon which a second gear is mounted to be turned by the first gear that is'preferably in mesh therewith. This bolt or shaft desirably also constitutes a means for assembling the retaining device by which the register hook is assembled with the bed in a manner to permit the register hook to move along the groove that receives it, but to prevent the hook from being lifted. i I will explain my invention more fully by reference to the accompanying drawing in which Fig. 1 is a View showing the register hook of my invention in elevation and a portion of a bed, that receives the body of the *register hook,"in section; Fig. 2 is a sectional view on line 2+2 of Fig. 1; Fig. 3 is a sectional view on line 3-3 of Fig 1; Fig. 4 is a sectional view on line 4-4 of Fig. 2; Fig. 5 is a perspective view illustrating some of the parts of theregister hook and also the 1929. Serial No..371,034.

detent which is illustrated in unassembled relation; Fig. 6 is a sectional view on line 66 of Fig. 4; and Fig. 7 is a sectional view, on a larger scale, on line 77 of Fig. 4. y

The register hook illustrated is inclusive of a body portion 1 in the form of an inverted U and a'jaw 2 having a stem 3 which is j ournaled within the upper portion of the body 1. A circular washer 4 is received within registering grooves that are provided in the stem 3 and body 1, whereby the jaw 2 is confined to a fixed plane of rotation with respect to the register hook body. The body 1 of the register hook is sufficiently narrow to be receivable within any selected groove 5 provided in the printing bed or foundation 1 5. This groove is formed with lateral enlargements 6 to afford retaining shoulders 7. Any suitable form of retaining device may be carried by the register hook. The retaining deviceillustrated is inclusive of two side bars 8 which are joined near their ends by iU-shaped spring members 9. These bars are received within grooves 10 which are formed longitudinally in the register hook body 1 and in the sides of this body.

These grooves are sufficiently deep to permit the bars to be fully received therein, when such barsare abreast "of the register hook body, to permit the register hook body to be dropped into the selected groove 5 and into a position in which the bars are in register with the enlargements 6 of the groove 5. The ends of the bars slope toward each other, as illustrated most clearly in Fig. 3, to enable a suitable form of tweezer to be applied thereto, such tweezer having camming engagement with the ends of the bars, whereby the bars 'may be contracted against the force of the, springs 9 in order that the register hook body may be dropped into the selected groove 5 or to enable such body to be withdrawn from such groove, as desired.

A bolt or shaft 11 is disposed lengthwise of the register hook body 1 and near the bottom thereof. This bolt or shaft is screwed into the sleeve bolt 12, the register hook body being clamped between the heads of both bolts. The gearing which is employed to two adjacent teeth of the gear 13. WVhen effect the longitudinal travel of the register hook body along the groove 5 in either clirection is inclusive of an upright beveled gear 13 which is coaxial with the jaw stem 3, a horizontal beveled gear 14 which is journaled upon and is coaxial with the bolt or shaft'll, a worm screw 15 which is preferablyintegrally formedwith the gear" 14 and is rotatable upon the shaft 11 and the stationary racks 16 which are provided in the bottom of the groove 5. The stem 3 of the jaw 2 is provided with a cylindrical bore that is coaxial with the beveled gear 13. This beveled gear is formed with a square bore which is adapted to receive the square shank of a wrench which is applied Whenever the register hook is to be moved along the groove 5. hen this wrench is turned the beveled gear 13. is turned, this gear turning the beveled gear 14 meshing therewith, the worm 15 turning with-the gear 14 to force the movement of the register hook body lralong the groove 5.

In order that the gearing 13, 14 and 15 may be held in the position to which it is adjusted,I employ a spring detent 17 which is preferably of U form. This detent formed with an eye 18 at one end, the shaft or bolt 11 being passed through this eye. The eye end of the detent is next tothe head of the bolt 11 and'is clamped or retained between this bolthead and the adjacent side of the body 1. The free or unmounted end of the detent 17 projects through a slot 19 that is formed in the end of the register hook body 1 wherev the gear 13 is disposed. slot exposes the adjacent side of the gear 13, the walls of the slot guarding the free or unmounted end of the detent and the side slotwalls serving to prevent material turning movement of the detent on the shaft or bolt The nose of the detent is rounded and is sufliciently broad to be engageable, at the same time, with the adjacent surfaces of any the gear 13 is stopped at a place to permit the nose of the detent to enter between any two adjacent teeth,the detent nose serves to hold such gear from turning movement. in either direction. If the gear. 13 should be stopped with the crown of one of its teeth opposite the nose of the detent, the detent serves to hold the gear in this position, the detent and the crowns of the teeth being formed with interengaging holding formations. These interengaging formations are desirably the rounded end of the noseand the concave faces 20 which are formed in the crowns of the teeth and extend lengthwise of the axis of the gear. The gear ratios are such that the movement of the register hook body 1 alongthe groove 5 is minute in rela tion to the distances between the teeth and This departing bination with the body portion thereof; of a jaw at the top side of the said body portion; a beveled gear journaled within the body portion, this gear having a bore formed to afford turning engagement of a wrench therewith and said jaw having an opening in alignment with said bore to afford passage for the wrench; a second beveled gear in mesh with the aforesaid beveled gear; a;

a gear driven by the second beveled gear and provided for engagement with a stationary rack; and a detent in the form of a. spring, the shaft passing through one end of the shaft for said second beveled gear, this shaft being carried by the aforesaid body portion;-"

spring and having a head in retaining en gagement with this spring end, the J un-: mounted end of the spring passing through a slot that is provided in the aforesaid body portion in the region of the first aforesaid" beveled gear and through which slot the.

aforesaid detent passes into engagement with this gear, the engaging end of the spring being receivable between adjacent teeth to have engagement therewith, the crowns ofthe .teeth of this gear being formed with conbination with the body portion thereof; of i a jaw at the top side of the said body portion; a beveled gear journaled within the body portion, this gear having a bore f formed to afford turning engagement of a wrench therewith and said jaw having an opening in alignment with said bore to af ford passage for the wrench; a second beveled gear in'mesh with the aforesaid beveled with a stationary rack; and a detent in the gear; a shaft for said second beveled gear, a

form of a spring, the shaft passing through one end'of the spring and having a head in retaining engagement with this spring end, the unmounted end of the spring passing through a slot that is provided in the;

aforesaid body portion in the region of the first aforesaid beveled gear and through' adjacent teeth to haveengagement therewith.

3. In a printers register hook, the combination with the body portion thereof; of

a jaw at the top side of the said body portion; a beveled gear journaled within the body portion, this gear having a bore formed to afford turning engagement of a wrench therewith and said jaw having an opening in alignment with said bore to afford passage for the wrench; a second beveled gear in mesh with the aforesaid beveled gear; a shaft for said second beveled gear, this shaft being carried by the aforesaid body portion; a gear driven by the second beveled gear and provided for engagement with a stationary rack; and a detent in the form of a spring, the shaft passing through one end of the spring, and having a head in retaining engagement with this spring end, the unmounted end of the spring passing through a slot that is provided in the aforesaid body portion in the region of the first aforesaid beveled gear and through which slot the aforesaid detent passes into engagement with this gear, the crowns of the teeth of this gear being formed with concave faces which are adapted to receive the engaging end of the detent.

4. In a printers register hook, the combination with the body portion thereof; of a jaw at the top side of the said body portion; a beveled gear journaled within the body portion, this gear having a bore formed to afford turning engagement of a wrench therewith and said jaw having an opening in alignment with said bore to afford passage for the wrench; a second beveled gear in mesh with the aforesaid beveled gear; a shaft for said second beveled gear, this shaft being carried by the aforesaid body portion; a gear driven by the second beveled gear and provided for engagement with a stationary rack; and a detent in the form of a spring, the shaft passing through one end of the spring and having a head in retaining engagement with this spring end, the unmounted end of the spring passing through a slot that is provided in the aforesaid body portion in the region of the first aforesaid beveled gear and through which slot the aforesaid detent passes into engagement with this gear, the detent and gear being formed with interengaging formations enabling the detent to hold this gear in the position to which it is turned.

In witness whereof, I hereunto subscribe my name.

WALLACE S. WARNOCK. 

